Gaya APA

Piechurska-kuciel, E, S, E, S. (2017). At the crossroads challenges of foreign language learning . Switzerland: Springer Nature.

Gaya MLA

Piechurska-kuciel, Ewa., Szymanska-Czaplak,, Elzbieta., Szyszka,Magdalena. "At the crossroads challenges of foreign language learning". Switzerland: Springer Nature, 2017. Text.